Riviera premium tours or provence tours? 5 or 8 hours?

[sr5242]

I'm torn between an eight hour tour with Rivera premium tours, or a five hour tour with provence tours. My mother has low stamina and difficulty walking, so I am worried an 8 hr tour might be too much for her, especially since it is our first day on the cruise will still be tired from traveling. Any thoughts?

[6rugrats]

I think you answered your own question. With the information given, I'd go with the five hour tour.